查询词典 difficult problem

Teacher evaluation is the important part of the educational and didactical activities in the basal education and it is the difficult problem in the field of the theory and practice of the educational management.

教师评价是中小学教育教学活动的重要组成部分，也是长期困扰教育管理理论与实践的一个难题。

But because of its own limitation of mini-enterprises, the popularization and application of ASP were difficult problem and a disquisitive hotspot all along.

但是由于中小企业普遍存在的自身条件的限制，在企业信息化建设的实施过程中，ASP的推广应用一直是个难题和研究的热点。

Single phase-to-earth fault location for the small neutral earthed system is still a difficult problem to be solved.

小电流接地系统单相接地故障测距一直是电力系统中的难点，行波测距法在接地故障测距中得到应用发展。

The liquid waste that generates to control cultivate birds aquaculture, waste residue and effluvial the pollution to the environment, total bureau of national environmental protection was released " pollutant discharge standard of cultivate birds aquaculture ", begin to administer cultivate birds farm and the contaminative difficult problem that breed an area.

为控制畜禽养殖业产生的废水、废渣和恶臭对环境的污染，国家环境保护总局发布了《畜禽养殖业污染物排放标准》，着手治理畜禽养殖场和养殖区的污染难题。

This thesis studies the floatation control, which is the difficult problem in the control technique of gold concentrators process.

本论文研究的是目前的选矿过程难题——浮选控制。

Will have any difficult problem to hobble me not to go to the heartache, will have any danger not to go in front of me flurriedly, even if will have pocket adult to capture me, also will treat as plays.

有什么难题去牵绊我都不会去心伤，有什么危险在我面前都不会去慌乱，就算有包包大人把我追捕，也当作游戏一场。

Now, dream is invisible the occurrence of filling garment craft, solved this one headachy difficult problem thoroughly.

而今，梦幻隐形补衣工艺的出现，彻底解决了这一令人头痛的难题。

Accordingly, predicting earthquake before its occurrence becomes a world-class difficult problem, challenging mankind's wisdom and inwit.

从两千年前张衡的《地震对策》到今日日本的《地震对策方案》，均反映了人们对地震灾害的确严重关切及所能采取地防震减灾措施；但对其预测预报，仍是不得其门而入，特别是震前预报更是世界级的难题，考验着人类的智慧和良知。

Since long, because of different requirements when working ,belt running leanly in movement ,the carrying idler's short service life, on-site maintenance big work load and so on many breakdown reasons and crucial understanding insufficiency, have made the carrying idler's function research and manufacture not be broken through, These make the carrying idlers to transport the material in inexpensive economic cost expense not to be able to obtain manifests fully, which is one that hasn't good solution of comprehensive technical difficult problem.

长期以来，由于对皮带托滚在输送机上所处不同工况性能要求，运行中存在皮带易跑偏，易损坏，托滚使用寿命短，现场维护工作量大等诸多故障原因及关键性认识不足，因而造成了对皮带托辊的功能研究和制造无重大技术突破，使皮带输送物料的最佳效果的低廉的经济成本费用未能得到充分体现，是一项没有得到较好解决的综合性技术难题。

The research contents with main full text and research results are summarized as follows:First of all , estimate the inaccurate difficult problem consuming time to the cost while making products quotation course, improve the existing index and predict the law levelly and smoothly with the fuzzy mathematics theory, propose the fuzzy similar comparative law builds and constructs the cost to appraise models, thus the speed and precision of improving the cost and estimating greatly .

全文主要的研究内容和研究成果概括如下：首先，针对制造产品报价过程中成本估算不准确、耗时的难题，用模糊数学理论改进现有的指数平滑预测法，提出模糊相似比较法建构成本估价模型，从而大大提高了成本估算的速度和精度。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。